For adding a quicksearch to Konqueror do the following:
Go to Settings->Configure Konqueror->Web Shortcuts
Click on "New"
Search provider name: Linux Howtos
Search URI: http://www.linuxhowtos.org/search/?extern=konqueror&q=\{@}
URI shortcuts: lhto (or whatever you like :} )
Enter lhto:Konqueror
and you should see this page.backSupport this site